Just create a new searchform.php file in your child theme, and insert the new search code in there. Take a look a the theme’s own searchform.php file for what you need to insert to preserve the formatting.
This free Support Forum relies on contributions from our support staffs and fellow Graphene themes users. While we endeavour to provide adequate and timely support, due to its voluntary nature responses are not guaranteed and may be delayed.
If you require urgent assistance, you may like to consider our Priority Support option.